XmlWriter.WriteEndAttributeAsync Method


Asynchronously closes the previous WriteStartAttribute(String, String) call.

protected public:
 virtual System::Threading::Tasks::Task ^ WriteEndAttributeAsync();
protected internal virtual System.Threading.Tasks.Task WriteEndAttributeAsync ();
abstract member WriteEndAttributeAsync : unit -> System.Threading.Tasks.Task
override this.WriteEndAttributeAsync : unit -> System.Threading.Tasks.Task
Protected Friend Overridable Function WriteEndAttributeAsync () As Task


The task that represents the asynchronous WriteEndAttribute operation.


An XmlWriter method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."


An XmlWriter asynchronous method was called without setting the Async flag to true. In this case, InvalidOperationException is thrown with the message "Set XmlWriterSettings.Async to true if you want to use Async Methods."


This is the asynchronous version of WriteEndAttribute, with the same functionality. To use this method, you must set the Async flag to true.

This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as ArgumentException, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by WriteEndAttribute().

Applies to

See also